720727 has 8 divisors (see below), whose sum is σ = 867200. Its totient is φ = 585144.

The previous prime is 720703. The next prime is 720743. The reversal of 720727 is 727027.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720727 - 2¹⁹ = 196439 is a prime.

It is a Duffinian number.

720727 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2577 + ... + 2842.

It is an arithmetic number, because the mean of its divisors is an integer number (108400).

2⁷²⁰⁷²⁷ is an apocalyptic number.

720727 is a deficient number, since it is larger than the sum of its proper divisors (146473).

720727 is a wasteful number, since it uses less digits than its factorization.

720727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445.

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 720727 is about 848.9564181982. The cubic root of 720727 is about 89.6582512766.

The spelling of 720727 in words is "seven hundred twenty thousand, seven hundred twenty-seven", and thus it is an iban number.